Composer & Travis updates (#155)

* Add lumen unit test dependency

* Add PHP 7.3 to travis

* Travis install tweak

* Travis install tweak #2

Author: howardlopez

.travis.yml

@@ -6,6 +6,7 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
   - hhvm
   - nightly
 
@@ -17,9 +18,14 @@ matrix:
     - php: nightly
 
 install:
-  - if [[ ${TRAVIS_PHP_VERSION} == "5.5.9" ]];
-    then travis_retry composer require laravel/framework;
-    else travis_retry composer update --no-interaction --prefer-source;
+  - if [ ${TRAVIS_PHP_VERSION} == "5.5.9" ]; then
+        travis_retry composer require laravel/framework "5.2.*";
+    elif [ ${TRAVIS_PHP_VERSION} == "5.6" ]; then
+        travis_retry composer require laravel/framework "5.4.*";
+    elif [ ${TRAVIS_PHP_VERSION} == "7.0" ]; then
+        travis_retry composer require laravel/framework "5.5.*";
+    else
+        travis_retry composer update --no-interaction --prefer-source;
     fi
 
 script: make test

composer.json

@@ -17,7 +17,8 @@
         "illuminate/support": "~5.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.0|~5.0"
+        "phpunit/phpunit": "~4.0|~5.0",
+        "vlucas/phpdotenv": "~2.0|~3.0"
     },
     "suggest": {
         "laravel/framework": "To test the Laravel bindings",